During Nixo’s senior year in college,he was selected to the Senior Indoor soccer Bowl at which the Dallas Sidekicks selected Nixo in the fourth round of the 1990 Major Indoor Soccer League draft. During pre-season camp he re injured the ankle he had broken twice in college,and the Sidekicks released him in October of 1990. Faced with the prospect of being unemployed Nixo started a business called. NSN Never Say Never. He signed with the Sidekicks as a free agent in 1993. Nixo played with the Dallas Sidekicks from 1993-1999. He won two championships with the Sidekicks, one in 1993 in the Continental Indoor Soccer League and the other in 1998 in Premier Soccer Alliance. He retired in 1999,due to health reasons.